The table cloths to the side of the stage proved difficult to hang and stay in place because we couldn't affix them to a cinderblock wall. Eventually we gave up fixing them every week, but no one seemed to notice and they still looked ok. We bought a few clown like hats at Target and used them to display the interactive elements, juggling scarves and balls. We also had Buddy Walking boards and put those out for the kids to play with.
I always consider costumes as part of decorating the stage. Dressing the part adds so much and completes the look. Corey was the ring master. Occasionally we had a clown, juggler, lion tamer, and once we had a guy on stilts. It was a great series, but on to the next!